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Advantages and Disadvantages of the Collection Framework

In this section, you will learn the advantages and disadvantages of Java Collection Framework. A collection is simply an object that groups multiple elements into a single unit. It is also called as a container sometimes. It is used to store, retrieve, manipulate, and communicate aggregate data. Typically, it represents data items that form a natural group and allows duplicate elements while others do not. It consists of both ordered and unordered elements. 

Advantages of collections framework:

1. We need not to learn multiple ad hoc collection APIs.
2. It provides a standard interface for collections that fosters software reuse and also provides algorithms to manipulate them.
3. Reduces the effort required to design and implement APIs by eliminating the need to produce ad hoc collections APIs.
4. It provides useful data structures and algorithms that reduces programming effort due to which we need not to write them ourselves.
5. It provides high-performance implementations of useful data structures and algorithms that increases the performance.
6. Helps in establishing a common language to pass collections back and forth that provides interoperability between unrelated APIs.
7. Collection is resizable and can grow.

Disadvantages of collections framework:

1. It must cast to correct type.
2. It can't be done compile-time type checking.

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